Burning something partially to blacken the surface; charring wood or meat in cooking, or charring a cloth edge.
From 'char' (to burn to charcoal), possibly from Old English 'cerran' or related to charcoal. The '-ing' form indicates ongoing action.
Charring is a survival skill dating back to fire-making itself—scorching wood at a certain temperature makes it burn more easily, which is why 'char cloth' (linen treated by charring) became essential to flint-and-steel fire starters.
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